Mechanism and kinetic characteristic of intelligent magnetic fluid acceleration sensor

Dong Cao; Guixiong Liu; Taobo Chen

doi:10.1117/12.716510

13 October 2006 Mechanism and kinetic characteristic of intelligent magnetic fluid acceleration sensor

Dong Cao, Guixiong Liu, Taobo Chen

Proceedings Volume 6280, Third International Symposium on Precision Mechanical Measurements; 62801D (2006) https://doi.org/10.1117/12.716510
Event: Third International Symposium on Precision Mechanical Measurements, 2006, Urumqi, China

Abstract

Traditional cantilever accelerometer generally has the problems of mechanical friction and the distort invalidation of elements which the magnetic fluid (MF) acceleration sensor presented in this paper utilizing a moving magnet fully suspended in MF could solve. This MF sensor is simple in the mechanism with controllable measurement range and precision. The moving magnet was balanced by the repulsive force of magnet in axial and MF second-order buoyancy in radial respectively. Its sensor model was brought forward and simplified to obtain its mathematical model. The MF magnetoviscous property that can realize the controllability of viscosity was discussed. The relations of sensor kinetic characteristic to various parameters including MF viscosity, acceleration and magnetic field energy were analyzed. The results show the moving trend is uniform under different acceleration. Through adjusting the magnetic field intensity to modify MF viscosity, it will get good astringency and keep balance time within 0.2s.

Citation Download Citation

Dong Cao, Guixiong Liu, and Taobo Chen "Mechanism and kinetic characteristic of intelligent magnetic fluid acceleration sensor", Proc. SPIE 6280, Third International Symposium on Precision Mechanical Measurements, 62801D (13 October 2006); https://doi.org/10.1117/12.716510

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